Math 165

Statistics

Homework

Fall 2006

Dr. Wilson

8/23 p36: 9; pp64-65: 7, 13; p89: 3

8/28 p89-91: 5, 9, 11, 13, 19

8/30 pp122-124: 11, 13, 17, 23

9/6 p125: 33, 35;

A company puts 3 types of trading cards in cereal boxes: Tiger Woods, Lance Armstrong, and Serena Williams. 20% of the cards are Tiger Woods cards, 30% of the cards are Lance Armstrong cards, and the remaining 50% of the cards are Serena Williams cards. Linda wants to collect all three cards, so she will keep pestering her parents until she has collected at least one of each of the three cards. How many boxes will she have to get her parents to buy in order to get all three cards?

Simulate an experiment. Use a table of random numbers or a random number generator to simulate picking a card. If a 0 or 1 comes up, that means she got a Tiger Woods card. If a 2, 3, or 4 comes up, that means she got a Lance Armstrong card, and if a 5, 6, 7, 8, or 9 comes up, that means she got a Serena Williams card. Keep choosing random numbers until she has gotten all three kinds of cards. After each experiment, note the number of boxes it took before she got cards of all three athletes. Repeat this experiment 15 times, and find the average number of boxes for the trials.

9/11 pp334-335: 9, 11, 17, 19.

9/13 pp357-360: 7, 45.

9/18 pp375-376: 1, 3, 5, 9, 15.

9/20 pp394-395: 7, 13.

9/25 p424: 3, 5

10/2 p444: 11, 13, 15; pp468-469: 11, 13, 17.

10/9 pp489-490: 1, 3, 5, 11, 13.

10/11 pp507-509: 5, 7, 15, 19

10/16 pp540-542: 11, 13, 25

10/18 pp566-569: 9, 19, 21.

10/23 pp588-587: 13, 5

11/1 p189: 35

11/6 p185-186: 1, 11, 13, 15.

11/8 p190: 40.

11/13 pp655-662: 1, 3, 27.

11/20 pp626-629: 3, 17, 19